Art of enameling metals.



G. L B10136; B.-W. GILUHRIST. ART OF ENAMELING METALS; APPLICATION FILEDFEB. 2, 1909.

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GEORGE L. RICE AND BENJAMIN W. GILCHRIST, OF WOODHAVEN, NEW YORK; SAIDGILCHRIST ASSIGNOR T0 SAID RICE.

ART OF ENAMELING METALS.

Specification of Letters Patent.

Patented (J e a Application filed February 2, 1909. Serial No. 475,581.

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This invention relates to the art of enameling metal and particularly tothe art of enameling household utensilsand other articles of manufactureor merchandise composed of iron or steel; and the invention consists inthe article produced by the process herein after described and in theprocess of producing said article as hereinafter set forth.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawing forms a part, said drawing being asectional view of one form of an ap paratus which we may employ.

In the drawing forming part of this speci fication, we have shown at aan ordinary electrolytic cell provided with the usual cathode and anodesupports 6 and c, and from the cathode support I) we suspend a utensil(Z which constitutes the article to be enameled, and from the anodesupport 0 is suspended the usual anode e, and connected with the partsI) and c or through said parts with the parts 03 and e are the usualcircuit wires f and g which connect with a generator It or other sourceof electricity.

The cell a contains an electrolyte i of which sulfur and a salt of metalor metals form a part, and the operation of this apparatus will be thesame as that of all similar apparatus of this class. In this operationthere is a film or covering of material deposited on the utensil d, andthis film or covering contains sulfur which may be present either in thefree or combined state.

Our invention is particularly designed for use in enameling variousutensils or articles composed of iron or steel, and in practice weprefer that the electrolyte in the cell a shall contain salts ofmagnetic metals and sulfur.

In the enameling of articles composed of iron or steel, as this rocesshas heretofore been produced it has een found diiiicult to unite theenamel with the body of the utensil or article in such manner as toproduce a perfect union, and the enamel easily shells off or breaks of,but with our improved process the sulfur in the magnetic covering orcoating which is first placed on the utensil or article to be enameledenables the enamel to adhere to the body of the utensil or article andto practically form an integral part thereof, or in other words theunion between the iron or steel body, the magnetic film or coating andthe enamel is such that these parts cannot be separated, and while theenamel may be broken by violent or rough usage it will not separate fromthe metallic body.

Having fully described our invention, what we claim as new and desire tosecure by Letters Patent, is

1. The method of enameling a metallic article, which consists indepositing, by the electrolytic process, on the article to be enameled,a coating of magnetic material and sulfur, and then applying the enamelthereto.

2. The. improvement in the art of enameling metallic articles whichconsists in interposing between the body of the article and the enamel abinding, coating or film of magnetic material containing sulfur.

In testimony that we claim the foregoing as our invention we have signedour names in presence of the subscribing witnesses this 80th day ofJanuary 1909.

GEORGE L. RICE. BENJAMIN IV. GILCI-IQTST. lVitnesses C. E. MULREANY,HARRY R. CANFIELD.

